Characteristics | All patients | 3D-printed group | Modular group | P value |
---|---|---|---|---|
Number | 32 | 19 | 13 | Â |
Demographic | ||||
 Sex* | 0.62 | |||
  Male | 18 (56.2) | 10 (52.6) | 8 (61.5) |  |
  Female | 14 (43.8) | 7 (36.8) | 7 (53.8) |  |
 Age†(yr) | 45.0 ± 13.4 | 46.3 ± 11.5 | 43.0 ± 16.0 | 0.50 |
 BMI†(kg/m2) | 24.4 ± 3.1 | 24.9 ± 2.9 | 23.8 ± 3.3 | 0.34 |
 Follow-up time†(mo) | 41.6 ± 10.5 | 42.3 ± 12.0 | 40.5 ± 8.0 | 0.64 |
Tumor histology* | 0.47 | |||
 Chondrosarcoma | 12 (37.5) | 7 (36.8) | 5 (38.5) |  |
 Osteosarcoma | 7 (21.9) | 4 (21.1) | 3 (23.1) |  |
 Ewing sarcoma | 6 (18.8) | 3 (15.8) | 3 (23.1) |  |
 Solitary plasmacytoma | 2 (6.3) | 2 (10.5) |  |  |
 Synovial sarcoma | 2 (6.3) | 2 (10.5) |  |  |
 Spindle cell carcinomas | 1 (3.1) | 1 (5.3) |  |  |
 Myofibroblastic sarcoma | 1 (3.1) |  | 1 (7.7) |  |
 Solitary fibrous tumor | 1 (3.1) |  | 1 (7.7) |  |
Tumor volume | ||||
 (Length × Width × Height, cm) | ||||
 Tumor length†(cm) | 9.7 ± 1.6 | 10.1 ± 2.6 | 9.1 ± 1.6 | 0.22 |
 Tumor width†(cm) | 6.9 ± 1.2 | 6.9 ± 1.3 | 6.7 ± 1.2 | 0.80 |
 Tumor height†(cm) | 5.2 ± 1.2 | 5.6 ± 1.3 | 4.8 ± 1.1 | 0.06 |
Preoperative staging* | 0.13 | |||
 IIB | 27 (90.6) | 16 (84.2) | 11 (84.6) |  |
 III | 5 (9.4) | 3 (15.9) | 2 (15.4) |  |
Neoadjuvant chemotherapy | ||||
 No. of patients* | 14 (4.8) | 8 (42.1) | 6 (46.2) |  |
Enneking Reconstruction Classification* | 0.87 | |||
 Type I + II | 8 (25.0) | 5 (26.3) | 3 (23.1) |  |
 Type II + III | 11 (34.4) | 7 (36.8) | 4 (30.8) |  |
 Type I + II + III | 13 (40.6) | 7 (36.8) | 6 (46.2) |  |
Preoperative MSTS Score | 15.0 ± 2.4 | 15.5 ± 2.5 | 14.3 ± 2.0 | 0.18 |
Preoperative HHS Score | 63.5 ± 6.6 | 64.1 ± 7.5 | 62.7 ± 5.3 | 0.58 |